This story paper might be useful for younger kids to write down what they have learned about Stephen Hawking, to write him a letter or to copy down some of his words of wisdom...
Here's a worksheet that's ideal for older children learning about science and famous scientists such as Sir Isaac Newton, Charles Darwin and Stephen Hawking.
Asking questions about the world around us is how many scientific theories begin, just like when Isaac Newton asked why the apple fell downwards and he ended up discovering gravity!